[PATCH 16/43] xfs: export zoned geometry via XFS_FSOP_GEOM

Christoph Hellwig
2025-02-06T06:46:00Z

Export the zoned geometry information so that userspace can query it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/libxfs/xfs_fs.h | 5 ++++-
fs/xfs/libxfs/xfs_sb.c | 6 ++++++
2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 2c3171262b44..5e66fb2b2cc7 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -189,7 +189,9 @@ struct xfs_fsop_geom {
uint32_t checked; /* o: checked fs & rt metadata */
__u32 rgextents; /* rt extents in a realtime group */
__u32 rgcount; /* number of realtime groups */
- __u64 reserved[16]; /* reserved space */
+ __u64 rtstart; /* start of internal rt section */
+ __u64 rtreserved; /* RT (zoned) reserved blocks */
+ __u64 reserved[14]; /* reserved space */
};

#define XFS_FSOP_GEOM_SICK_COUNTERS (1 << 0) /* summary counters */
@@ -247,6 +249,7 @@ typedef struct xfs_fsop_resblks {
#define XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE (1 << 24) /* exchange range */
#define XFS_FSOP_GEOM_FLAGS_PARENT (1 << 25) /* linux parent pointers */
#define XFS_FSOP_GEOM_FLAGS_METADIR (1 << 26) /* metadata directories */
+#define XFS_FSOP_GEOM_FLAGS_ZONED (1 << 27) /* zoned rt device */

/*
* Minimum and maximum sizes need for growth checks.
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 088c192810f5..71cf5eba94a7 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1569,6 +1569,8 @@ xfs_fs_geometry(
geo->flags |= XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE;
if (xfs_has_metadir(mp))
geo->flags |= XFS_FSOP_GEOM_FLAGS_METADIR;
+ if (xfs_has_zoned(mp))
+ geo->flags |= XFS_FSOP_GEOM_FLAGS_ZONED;
geo->rtsectsize = sbp->sb_blocksize;
geo->dirblocksize = xfs_dir2_dirblock_bytes(sbp);

@@ -1589,6 +1591,10 @@ xfs_fs_geometry(
geo->rgcount = sbp->sb_rgcount;
geo->rgextents = sbp->sb_rgextents;
}
+ if (xfs_has_zoned(mp)) {
+ geo->rtstart = sbp->sb_rtstart;
+ geo->rtreserved = sbp->sb_rtreserved;
+ }
}

/* Read a secondary superblock. */
--
2.45.2